Stop motion



25, 1927. l'l. DOHERTY, JR

STOP MOTION Filed Feb. 21, 1927 INVENTOR wllokefi It,

" momvr H e? BY 7 one ormore of the threadsinvolved itself breaks and the unusual strain has produced ible part 8.

beam 1, subject Patented Oct. 25, 1927. v

nanny DOHERYIY, m; or CLIFTON, New JERSEY.

. s'ror MOTION.

Application filed February 21,1927. 'Seria1' No. 169,828.

. It is known that in weaving andalso in warping two or 'more warp threads will 00- casionally become bound together so effectively, as by their fibres intersnarling, that where a lease is formed in the warp the connectlon, or sticker as it 1s sometimes called,

thus established will not break down before a blemish in the goods or some other fault.

,For detecting such stickers careful weav ers sometimes resort to a makeshift detecting means consisting of a cord which is anohoredat one end, extends through the shed formed" by the lease-rods and} has a light weight at its other end, undue upward movement of the weight indicating-that a sticker has caught the 'cord, flexing it "forward. The object of this invention is to'provide means for detecting stickers in an advancing warp which shall be more reliable in its op eration than to and which may be used to actuatemeclr anismfor stopping the loom or other machine.

In the drawing,

Fig. 1 is a vertical front to rear sectional view showing my invention in place on a 100m, the principal elements of which concerned in the support and advance of the warp are shown; p

' Fig. 2 is a plan of the invention and the rear part ofso muchof the loom as appears in Fig. 1; i g

, Fig. 3 is a side elevation'ron a larger scale of what appears in Fig. 2, with parts 13 and '15 removed; and 1 Fig. 4 shows a sticker acting on the flex- In the drawing, A is the sheetof warp and woven fabric extending from the warpto some the take-up means 4?. 5 is the batten or lay, 6 the harness for'forming sheds A"-in the warp, and 7 the pair of lease-rods for main taining a cross and consequently what might 'betermed lease-sheds in the warp.

A cord or other flexible elongated device 8 extends through one of the sheds B, as the rear one and back of the rear lease-rod.

This cord is not allowed to ride on the lower.

' sheet of the warp'but is supported clearlof 5 preferably both sheets,'as by two pulleys 9 around which it extends.

are journaled on vertical axes inarms the makeshift means referred braking means 2, over the whip-roll 3 and breast-beam 4, to V given posltion These pulleys 9 that are adjustable forward and back in the bent-0E ends of other arms 11 secured by 7 set-screws12-in brackets 13 upstanding front the loom-frame [14. The arms 11 carry other brackets 15; these brackets'support the ends of the lease-rods .7 and they also' carry,

suitably insulated therefrom, and arranged. above the lease-ro.ds,-zthe bars 16, 16? forming here the terminals 'ofan electric circuit. 17

containing the source ofenergy 18 and an.

electro-magnet 19 whosefarmatureyis here assumedto be the controller lever 20 of the loom. 'On passing around the'pulleys 9 the ends of the device 8 extend forward under therear lease-rods 7 and upward, being at tachedto the detectors,'eachof' which -is, a. i

metallic-Spr g ridg ng the ,two terminals '16, 16- and secured to oneiofth em and nor mally spaced from the other.

\ V When a sticker occurs, s at BiintFigs'.

2 and 4, it'draws forward the device 8, r

which of course results in-a pull on one or v I both of the members 21 and moves the same,

to detecting case would position, which in the present be Where the detector contacts with the bar 16 and so; closes the circuit,

stopping the loom.

There is a distinct advantage inlproviding as an anchorage at each end of the device 8 a detector, as 21, in that the mechanism operates with certainty'wherever a sticker appears in the entire width of the warp.

It isalso of. advantage that each detector be normally held, as is the case in the illustrated construction, in a given position,

since therebynot only the device 8 is 'returned from flexed to normal position when released by the sticker but device8 isjkept direction from working lengthwise in one or the other as-it would do if it were simply kept taut by two weights, 'one at eachend. V

fully described'my invention what I cla m anddesireto secureby Letters Having thus Patent is: I

i 1. In combinationpmeans to support and advance a group of warp threads having a shed therein,'a detector elastically held in a butmovable'to detectingposition, and means totransmit such movement to said detector including a flexible:v

elongateddevice attached to said detector, anchored at a po'intremoved therefrom and between said" detector and point extending through the shed.

2." In combination, means to support and advance a group. of ,Warp threads havinga 7 extending through said shed.

shed therein, a pair of detectors. each normally 'heldinagiven position but movable to detecting position, and'means to trans-- mit such movement to one ofsaid detectors including a flexible elongated device ttached to both detectors and between them 3. In combination, means to supportand advance, a group of Warp threads having a shed therein, a pair :ofdetectorseach springheld in a given positionbut movable to dev 1 tecting'positiomand means totransmit such; movement to one ofsaid detectors including a flexible elongated device'attached to both detectorsandw between them extending u through said-shed. a 1

,4. In coinbination, means to support and advance a group. ofwar'p' threads having a shed therein, aldetectornormally held in a given position-but movable to detecting p0 sition,-means to transmit such movement to said detector including afflexible elongated device' attached to .said detector, anchored shed therein, electro-magnetic means to be actuated including a circuit having spaced terminals forming a break therein, a circuit-closing member movable from" one to the other of 'two positions into and out of c irc itplosing relation to said terminals and normally held in one of them, and means to movesaid member to the other position including a flexible elongated device attached to. said member, anchoredat a point removed therefrom and between said-detector and point extending through the,

shed.

(3.111 combination, means tosupport and 7 advance a group of- Warp threads having a 1 shed therein, electro-magnetic means. to be actuated including a circuit having spaced terminals forming a break therein, circuit- -closin-g memberseach movable from one to theother of two positions into and out of i v r=ircui.t-closing relation to said terminals and.

normally held in one of them, and means to move each of said members tothe other'position' including a flexibleelongated device, 7;.

between them attached-to said members and extending through the shed.

In testimony whereof I afiix my signature HENRY Doi iiRTY, R. 

